Fixed fd leak in test code.

Author: pornin

src/rand/sysrng.c

@@ -161,9 +161,10 @@ br_prng_seeder_system(const char **name)
 		*name = "win32";
 	}
 	return &seeder_win32;
-#endif
+#else
 	if (name != NULL) {
 		*name = "none";
 	}
 	return 0;
+#endif
 }

tools/server.c

@@ -1218,6 +1218,13 @@ do_server(int argc, char *argv[])
 		closesocket(fd);
 #else
 		close(fd);
+#endif
+	}
+	if (server_fd != INVALID_SOCKET) {
+#ifdef _WIN32
+		closesocket(server_fd);
+#else
+		close(server_fd);
 #endif
 	}
 	return retcode;